Moon Lake Diatom Salinity-Drought Data: Readme file
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               World Data Center for Paleoclimatology
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NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!


NAME OF DATA SET: Moon Lake Diatom Salinity-Drought Data.
LAST UPDATE: 4/98 (Original Receipt by WDCA Paleo)  
CONTRIBUTORS: Kathleen R. Laird, Sherilyn C. Fritz, 
Kirk A. Maasch, and Brian F. Cumming.

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 1998-015
SUGGESTED DATA CITATION: 
Laird, K.R. et al, 1998, Moon Lake Diatom Salinity-Drought Data,
IGBP PAGES/World Data Center-A for Paleoclimatology 
Data Contribution Series # 1998-015.  
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCE: 
Laird, K.R., S.C. Fritz, K.A. Maasch, and B.F. Cumming, 1996, 
Greater drought intensity and frequency before AD 1200 in the 
Northern Great Plains, USA, Nature v.384 552-554.

GEOGRAPHIC REGION: Northern Great Plains, USA and Canada
PERIOD OF RECORD: 350 BC - 1980 AD 

DESCRIPTION: 
Drought intensity and frequency on the Great Plains of North America
inferred from Diatom derived salinity reconstructions in Moon Lake, 
North Dakota, USA (46 51' 27" N, 98 09' 30" W.  ~35 ha, max. depth ~13m).

Reconstructed extreme droughts are more frequent before 1200 AD.


DATA:
Laird et al. (Nature 384, 552-554)  Moon L. salinity data, tab-delimited text file

Column 1:  Age, Calendar Years before 1950 AD
Column 2:  Diatom inferred salinity, grams per liter
Column 3:  Deviation from the 2300-yr  mean salinity (deviation from the mean of the values in column 2)

yrBP	salinity	deviation
1950AD	g/l	from mean
-30	6.68	-0.5
-27.3	6.35	-0.56
-24.6	5.74	-0.66
-22	6.45	-0.54
-19.3	6.88	-0.48
-16.6	6.23	-0.57
-13.9	6.96	-0.46
-11.2	8.86	-0.22
-8.6	6.25	-0.57
-5.9	8.69	-0.24
-3.2	6.46	-0.54
-0.5	6.17	-0.58
2.1	8.74	-0.24
4.8	7.17	-0.43
7.5	6.01	-0.61
10.2	12.29	0.11
12.9	15.38	0.33
15.5	10.03	-0.1
18.2	16.81	0.42
20.9	11.69	0.06
23.6	8.06	-0.32
26.3	8.4	-0.28
28.9	7.2	-0.43
31.6	5.67	-0.67
34.3	4.98	-0.8
37	6.82	-0.48
39.6	5.26	-0.74
42.3	8.8	-0.23
45	8.59	-0.25
47.7	8.41	-0.27
50.4	12.88	0.15
53	11.63	0.05
55.7	9.42	-0.16
58.4	27.14	0.9
61.1	17.01	0.43
63.7	18.49	0.51
66.4	13.08	0.17
69.1	5.89	-0.63
71.8	10.17	-0.08
74.5	12.19	0.1
77.1	13.83	0.22
79.8	14.78	0.29
82.5	14.17	0.25
85.2	13.37	0.19
87.9	10.41	-0.06
90.5	7.64	-0.37
93.2	4.69	-0.86
95.9	4.71	-0.85
98.6	4.73	-0.85
101.2	6.07	-0.6
103.9	2.86	-1.35
106.6	3.9	-1.04
109.3	2.5	-1.49
112	2.11	-1.65
114.6	1.66	-1.9
117.3	1.5	-2
120	1.54	-1.97
125.2	1.79	-1.82
130.4	1.54	-1.97
135.6	3.64	-1.11
140.8	7	-0.46
146	12.34	0.11
151.2	13.16	0.17
156.4	11.36	0.03
161.6	11.88	0.07
166.8	10.37	-0.06
172	11.82	0.07
177.2	8.02	-0.32
182.4	9.79	-0.12
187.6	13.92	0.23
192.8	7.66	-0.37
198	7.45	-0.4
203.2	5.46	-0.71
208.4	4.24	-0.96
213.6	2.37	-1.54
218.8	8.68	-0.24
224	5.5	-0.7
229.2	6.45	-0.54
234.4	10.05	-0.1
239.6	9.08	-0.2
331.4	28.13	0.93
334.2	15.47	0.34
336.9	10.16	-0.09
342.5	4.67	-0.86
348	6.9	-0.47
353.6	10.72	-0.03
359.1	13.09	0.17
364.7	6.21	-0.58
370.2	7.82	-0.35
375.8	13.9	0.23
381.3	16.49	0.4
386.8	16.43	0.4
392.4	15.43	0.33
397.9	16.96	0.43
403.5	15.69	0.35
409	8.46	-0.27
414.6	7.28	-0.42
420.1	3.74	-1.08
425.7	12.38	0.11
431.2	7.21	-0.43
436.7	10.88	-0.02
442.3	15.29	0.32
447.8	16.48	0.4
453.4	6.1	-0.59
458.9	4.06	-1
464.5	2.72	-1.4
470	3.63	-1.11
475.6	12.26	0.1
481.1	13.28	0.18
486.6	12.65	0.13
492.2	24.31	0.79
497.7	13.9	0.23
503.3	12.32	0.11
509	7.04	-0.45
512.3	4.32	-0.94
515.6	3.42	-1.17
518.9	4.29	-0.95
522.3	3.68	-1.1
525.6	18.95	0.54
528.9	11.74	0.06
532.2	8.15	-0.31
535.5	6.33	-0.56
538.8	7.97	-0.33
542.2	12.22	0.1
545.5	11.26	0.02
548.8	8.93	-0.21
552.1	9.05	-0.2
555.4	12.11	0.09
558.7	6.94	-0.47
562	1.73	-1.85
565.4	3.75	-1.08
568.7	11.63	0.05
572	2.83	-1.36
575.3	5.12	-0.77
578.6	7.23	-0.43
581.9	6.37	-0.55
585.2	6.49	-0.53
588.6	2.11	-1.66
591.9	1.83	-1.8
595.2	2.23	-1.6
598.5	1.72	-1.86
601.8	3	0.69
605.1	2.04	-1.69
608.5	1.39	-2.07
611.8	2	-1.71
615.1	9.9	-0.11
620.5	7.73	-0.36
623.2	7.05	-0.45
626	8.5	-0.26
628.7	5.82	-0.64
631.5	6.13	-0.59
634.2	15.47	0.34
637	14.37	0.26
639.8	15.27	0.32
642.5	19.57	0.57
645.3	14.75	0.29
648	18.75	0.53
650.8	6.96	-0.46
653.5	6.16	-0.59
656.3	5.49	-0.7
659.1	7.58	-0.38
661.8	11.86	0.07
664.6	5.13	-0.77
667.3	2.4	-1.53
670.1	7.78	-0.35
672.8	10.89	-0.02
675.6	21.41	0.66
678.3	17.32	0.45
681.1	14.4	0.26
683.9	12.18	0.1
686.6	8.51	-0.26
689.4	10.54	-0.05
692.1	4.97	-0.8
694.9	5.19	-0.76
697.6	7.45	-0.4
700.4	11.79	0.06
703.1	12.85	0.15
705.9	12.13	0.09
708.7	20.29	0.61
711.4	18.97	0.54
714.2	17.31	0.45
716.9	18.3	0.5
719.7	5.7	-0.66
722.4	15.69	0.35
725	10.48	-0.05
729.7	15.29	0.32
734.4	10.98	-0.01
739.2	5.05	-0.78
743.9	8.7	-0.24
748.6	13.56	0.2
753.3	9.31	-0.17
758.1	7.04	-0.45
762.8	14	0.24
767.5	16.18	0.38
772.2	13.78	0.22
776.9	14.21	0.25
781.7	19.93	0.59
786.4	16.12	0.38
791.1	21.63	0.67
795.8	32.59	1.08
800.6	23.41	0.75
805.3	25.97	0.85
810	25.87	0.85
814.7	21.35	0.66
819.4	26.34	0.87
824.2	12.83	0.15
828.9	13.71	0.21
833.6	14.04	0.24
838.3	27.72	0.92
843.1	33.41	1.11
847.8	21.85	0.68
852.5	10.62	-0.04
857.2	21.35	0.66
861.9	14.04	0.24
866.7	15.29	0.32
871.4	17.46	0.46
876.1	26.29	0.87
880.8	20.37	0.61
885.6	22.44	0.71
890.3	9.38	-0.16
895	24.51	0.8
899.7	21.78	0.68
904.4	14.82	0.29
907.3	11.55	0.04
909.2	25.38	0.83
911.5	26.39	0.87
913.9	18.71	0.53
916.3	13.68	0.21
918.6	10.77	-0.03
921	13.65	0.21
923.3	11.3	0.02
925.7	12.4	0.11
928.1	17.92	0.48
930.4	9.82	-0.12
932.8	13.92	0.23
935.1	17.31	0.45
937.5	12.11	0.09
939.9	15.82	0.36
942.2	20.88	0.64
944.6	19.75	0.58
947	18.73	0.53
949.3	9.7	-0.13
951.7	9.65	-0.14
954	5.95	-0.62
956.4	15.64	0.35
958.8	6.75	-0.49
961.1	11	-0.01
963.5	5.36	-0.72
966	10.97	-0.01
973.2	14.47	0.27
980.4	11.6	0.05
987.6	17.12	0.44
994.8	10.98	-0.01
1002	12.16	0.09
1009.2	12.91	0.15
1016.4	7.89	-0.34
1037.8	14.56	0.27
1045.2	11.43	0.03
1052.6	14.21	0.25
1059.9	10.97	-0.01
1067.3	13.63	0.21
1074.6	12.59	0.13
1082	16.91	0.42
1089.4	10.02	-0.1
1096.7	5.64	-0.67
1104.1	4.88	-0.82
1111.5	7.78	-0.35
1118.8	17.71	0.47
1126.2	16.38	0.39
1133.5	16.15	0.38
1140.9	17.78	0.47
1148.3	16.1	0.38
1155.6	16.43	0.4
1163	23.08	0.74
1170.3	25.18	0.82
1177.7	23.78	0.77
1185.1	27.52	0.91
1192.4	24.17	0.78
1199.8	19.95	0.59
1207.2	23.55	0.76
1214.5	23.78	0.77
1221.9	20.86	0.63
1229.2	12.72	0.14
1236.6	6.45	-0.54
1244	10.19	-0.08
1251.3	15.47	0.34
1258.7	11.31	0.02
1266	11.87	0.07
1273.4	11.47	0.04
1280.8	20.53	0.62
1288.1	13.53	0.2
1295.5	13.68	0.21
1302.9	18.08	0.49
1310.2	17.71	0.47
1317.6	9.37	-0.17
1324.9	11	-0.01
1332.3	12.42	0.12
1339.7	6.75	-0.49
1347	7.65	-0.37
1354.4	6.56	-0.52
1361.7	6.42	-0.54
1369.1	7	0.29
1376.5	9.91	-0.11
1383.8	12.82	0.15
1391.2	15.39	0.33
1398.6	13.28	0.18
1405.9	9.4	-0.16
1413.3	12.9	0.15
1420.6	12.37	0.11
1428	15.18	0.32
1435.4	15.86	0.36
1442.7	10.32	-0.07
1450.1	18.25	0.5
1457.4	14.95	0.3
1464.8	14.85	0.29
1472.2	12.12	0.09
1479.5	14.92	0.3
1486.9	13.87	0.23
1494.3	9.67	-0.13
1501.6	12.78	0.14
1509	11.73	0.06
1516.3	15.41	0.33
1523.7	17.44	0.46
1531.1	15.3	0.32
1538.4	15.29	0.32
1545.8	15.8	0.36
1553.1	16.3	0.39
1560.5	14.1	0.24
1567.9	10.53	-0.05
1575.2	10.35	-0.07
1582.6	11.85	0.07
1590	9.36	-0.17
1597.3	12.18	0.1
1604.7	15.52	0.34
1612	15.67	0.35
1619.4	20.72	0.63
1626.8	21.71	0.67
1634.1	19.13	0.55
1641.5	17.24	0.44
1648.8	16.15	0.38
1656.2	21.26	0.65
1663.6	31.09	1.03
1670.9	26.23	0.86
1678.3	22.9	0.73
1685.6	20.61	0.62
1693	21.2	0.65
1700.4	23.64	0.76
1707.7	20.53	0.62
1715.1	20.51	0.62
1722.5	22.83	0.72
1729.8	22.33	0.7
1737.2	13.86	0.23
1744.5	12.21	0.1
1751.9	9.09	-0.2
1759.3	7.06	-0.45
1766.6	7.98	-0.33
1774	14.41	0.26
1781.3	7	-0.46
1788.7	7.47	-0.39
1796.1	8.73	-0.24
1803.4	10.37	-0.06
1810.8	18.28	0.5
1818.2	20.91	0.64
1825.5	34.06	1.12
1832.9	12.81	0.15
1840.2	14.66	0.28
1847.6	11.8	0.06
1855	12.68	0.14
1862.3	25.66	0.84
1869.7	6.57	-0.52
1877	24.9	0.81
1884.4	25	0.82
1891.8	13.59	0.21
1899.1	22.42	0.71
1906.5	23.93	0.77
1913.9	15.53	0.34
1921.2	15.61	0.34
1928.6	21.22	0.65
1935.9	24.29	0.79
1943.3	14.97	0.3
1950.7	16.33	0.39
1958	19.81	0.58
1965.4	11.19	0.01
1972.7	14.24	0.25
1980.1	8.73	-0.24
1987.5	19.83	0.58
1994.8	19.73	0.58
2002.2	18.88	0.53
2009.6	10.06	-0.09
2016.9	16.12	0.38
2024.3	14.44	0.27
2031.6	18.39	0.51
2039	12.52	0.12
2046.4	16.17	0.38
2053.7	12.55	0.13
2061.1	13.94	0.23
2068.4	7.85	-0.34
2075.8	6.81	-0.49
2083.2	12.39	0.11
2090.5	15.32	0.33
2097.9	11.5	0.04
2105.3	16.38	0.39
2112.6	21.8	0.68
2120	23.97	0.77
2127.3	29.25	0.97
2142.1	25.33	0.83
2149.4	7	-0.46
2156.8	6.06	-0.6
2164.1	3.39	-1.18
2171.5	4.52	-0.89
2178.9	16.02	0.37
2186.2	16.18	0.38
2193.6	18.05	0.49
2201	23.97	0.77
2208.3	20.72	0.63
2215.7	18.88	0.53
2223	22.11	0.69
2230.4	22.83	0.72
2237.8	15.04	0.31
2245.1	27.8	0.92
2252.5	34.64	1.14
2259.8	29.61	0.98
2267.2	31.98	1.06
2304	16.2	0.38